libraries/iosrv/client/pod_lexer.h
author Tom Sutcliffe <thomas.sutcliffe@accenture.com>
Thu, 26 Aug 2010 00:49:35 +0100
changeset 45 534b01198c2d
parent 0 7f656887cf89
permissions -rw-r--r--
Added ENotifyKeypresses and ECaptureCtrlC flags to CCommandBase. Commands can now get keypresses and handle ctrl-C via callbacks instead of having to implement custom active objects. As part of this extended the CCommandBase extension interface to MCommandExtensionsV2 for the new virtual functions KeyPressed(TUint aKeyCode, TUint aModifiers) and CtrlCPressed(). sudo now cleans up correctly by using ECaptureCtrlC.

// pod_lexer.h
// 
// Copyright (c) 2009 - 2010 Accenture. All rights reserved.
// This component and the accompanying materials are made available
// under the terms of the "Eclipse Public License v1.0"
// which accompanies this distribution, and is available
// at the URL "http://www.eclipse.org/legal/epl-v10.html".
// 
// Initial Contributors:
// Accenture - Initial contribution
//

#ifndef __POD_LEXER_H__
#define __POD_LEXER_H__

#include <e32std.h>

const TInt KMaxNestedAttributes = 16;


/**
 * Responsible for understanding POD interior sequences (B<bold>, I<italic>, etc.).
 */
class TPodLexer
	{
public:
	enum TTokenType
		{
		EAttributePush,
		EAttributePop,
		ETextBlock,
		ECodeBlock,
		ELink,
		EIndexEntry
		};
	enum TAttribute
		{
		ENull		= 0x00000000,
		EBold		= 0x00000001,
		ECode		= 0x00000002,
		EItalic		= 0x00000004,
		EFileName	= 0x00000008
		};
public:
	TPodLexer(const TDesC& aString);
	void NextTokenL(TPtrC& aToken, TTokenType& aTokenType, TUint& aAttributes, TBool& aEop, TBool& aEos);
private:
	TInt SkipToClosingAngleBracket();
	TBool Eop();
	TBool IsInteriorSequenceStart(TUint16& aSequenceIdentifier);
	void PushAttribute(TAttribute aAttribute);
	TAttribute PopAttribute();
private:
	TLex iLex;
	TUint iAttributes;
	TBuf<64> iScratch;
	TFixedArray<TAttribute, KMaxNestedAttributes> iAttributeStack;
	TInt iAttributeStackIndex;
	};

#endif // __POD_LEXER_H__